20411392

素因数分解:

$2^{10}\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:694

約数の個数: 44

約数和(自身を含む): 42184576

約数和(自身を除く): 21773184

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 643, 992, 1024, 1286, 1984, 2572, 3968, 5144, 7936, 10288, 15872, 19933, 20576, 31744, 39866, 41152, 79732, 82304, 159464, 164608, 318928, 329216, 637856, 658432, 1275712, 2551424, 5102848, 10205696, 20411392]

約数ペア:

[(1, 20411392), (2, 10205696), (4, 5102848), (8, 2551424), (16, 1275712), (31, 658432), (32, 637856), (62, 329216), (64, 318928), (124, 164608), (128, 159464), (248, 82304), (256, 79732), (496, 41152), (512, 39866), (643, 31744), (992, 20576), (1024, 19933), (1286, 15872), (1984, 10288), (2572, 7936), (3968, 5144)]